from tkinter import *

x = 0
y = 0
N = 10

coords = [0,0,
          10,0,
          10,10,
          20,10,
          20,20,
          10,20,
          10,30,
          0,30]

if N == 0 and x <= 500 and y<=500 :
    pass
else :
    if N > 0 and 20*N+x>=0 and 20*N+y >= 0 and 0*N+x<=500 :
        pass
    else :
        print("размер фигуры превышает максимальный размер поля")
        exit()

root = Tk()
root.title("ИТ марафон")
root.geometry("500x500")

canvas = Canvas(bg="white", width=500, height=500)
canvas.pack(anchor=CENTER, expand=1)

canvas.create_polygon(coords[0] *N+x, coords[1] *N+y,
                      coords[2] *N+x, coords[3] *N+y,
                      coords[4] *N+x, coords[5] *N+y,
                      coords[6] *N+x, coords[7] *N+y,
                      coords[8] *N+x, coords[9] *N+y,
                      coords[10] *N+x, coords[11] *N+y,
                      coords[12] *N+x, coords[13] *N+y,
                      coords[14] *N+x, coords[15] *N+y,)
                      
root.mainloop()


